I've had good success with talking to the guys at Clifford Performance.
www.cliffordperformance.com They reccommended a mild cam, a progressive 2 barrel and real tube headers. They said splitting the manifold or running Fentons doesn't really gain you much. He said dual carbs are alright for a show truck and such, but said to stay away from them on a daily driver. They usually go out of tune easily and suck gas.